Cross-Linking of Wool Keratin By Bifunctional Aldehydes

Abstract

Treatment of wool fabrics with mono- and bifunctional aldehydes was followed by determinations of amino acid composition, NH₂-group content, solubility in alkali, acids, and urea-bisulfite, affinity toward acid dye, and physico-mechanical properties. Differences were observed in the properties of treated and untreated fabrics. These differences are related to cross-linking between polypeptide chains of keratin.

Keywords

Keratin;Merino wool;acetaldehyde;valeraldehyde;glutaraldehyde;glyoxal;benzaldehyde;terephthalaldehyde;aldehydes;reactants Cross-linked keratin;chemically modified wool Xylene Fast Blue (C I Acid Blue 82);Xylene Fast Red P (C. I. Acid Red 118);Alizarin Light Blue 2GL (C. I. Acid Blue 40);acid dyes;alkali;HCl;urea-bisulfite;phosphate buffer Concentration;time;pH;temperature Dye uptake;exhaustion;dye affinity;amino acid composition;lightfastness;washfastness;solubility;tensile strength;extension;width shrinkage Cross-linking (polypeptide chains)Reactions (chemical);dyeing

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